[Public-List] Spreader Material

[David Gilbert]

Thanks Gord, we'd be happy to see you at ABYC again any time. Well,  
I'm doing the right thing by taking it down every year. I did have to  
replace the rusting pop rivets that hold the heavy aluminum spreader  
housings in place.
David
On 7-Oct-13, at 3:03 PM, Gordon Laco wrote:

> Hello David - great club.
>
> It's not the swages I'd suggest examining - Bruce is right that one  
> needs to
> X ray or acid pigment them to reveal trouble - it's the pins,  
> shackles,
> tangs, spreaders, sheaves etc that more frequently and regularly  
> wear out.
>
> Gord  Surprise #426
>
>
> On 07/10/13 3:00 PM, "David Gilbert" <bigkanu at rogers.com> wrote:
>
>> My Club, ABYC in Toronto, is moving towards a mast up haul out for
>> certain larger vessels. I will not take advantage of this because
>> dismasting an Alberg 30 is very easy given the right equipment and
>> people. ABYC is a self help Club and sports both. I loosen the rig,
>> replace the locking rings on the clevis pins with a length of copper
>> wire, very easy to remove. Then take the clevis pins out of the
>> forward and aft lowers and let them hang loose; move to the mast  
>> crane
>> area. Put the straps around the mast and lift to just below the
>> spreaders. Good idea to have a secure line pulling down on the strap
>> and secured at the base of the mast. Remove the footing bolt, ensure
>> the strap now has the weight of the mast. Remove the four cardinal
>> uppers, lift the mast and it's done. The copper wire/clevis pin  
>> method
>> beats turning off turnbuckles by several minutes.
>> When we had the boat in Prinyer's Cove for 7 years we never took the
>> mast down. Conventional wisdom says to always take it down to inspect
>> the swaged fittings. I asked Bruce Burgess at the rigging Shoppe  
>> about
>> this and he told me that the only way you can identify weaknesses in
>> the swaging is by Xray. So it stayed up. Of course I have aluminum
>> spreaders but, if they were wood I would want to inspect them every
>> year.
>> David
>> On 7-Oct-13, at 2:07 PM, Dominic Amann wrote:
>>
>>> I noticed you suggested that it is a good idea to take down the mast
>>> for
>>> winter. I assume you have not yet done so for your boat? If not,
>>> would you
>>> accept a volunteer to help (so I can learn how it is done for my own
>>> boat)?
>>>
>>>
>>> On Mon, Oct 7, 2013 at 11:57 AM, Gordon Laco <mainstay at csolve.net>
>>> wrote:
>>>
>>>> Very interesting Greg.
>>>>
>>>> Black locust is wonderful wood.  We're making block shells out of
>>>> it, and
>>>> I'm planning on using it for the toe rails and rubbing strakes of
>>>> my wooden
>>>> boat as part of her rescue.
>>>>
>>>> Best of all, when varnished it's got that lovely blonde look white
>>>> oak has.
>>>>
>>>> Thank you.
>>>>
>>>> Gord
>>>>
>>>>
>>>>
>>>>
>>>> On 07/10/13 11:53 AM, "Greg Bover" <gregbover at cbfisk.com> wrote:
>>>>
>>>>> I think I recognize the wood properties chart from page 4-7 of
>>>>> The Wood
>>>>> Handbook: wood as an engineering material, put out by the Forest
>>>> Service. A
>>>>> well-thumbed copy sits on my desk in the organ building company
>>>>> where
>>>> I've
>>>>> been a wood worker and designer for 35 years. It is available at
>>>>> many
>>>>> libraries, especially academic ones, and can be had for cheap  
>>>>> second
>>>> hand at
>>>>> Alibris. Hickory does have great compressive strength parallel to
>>>>> the
>>>> grain,
>>>>> but is in the grouping of "slightly or non-resistant" when it
>>>>> comes to
>>>>> decay, (page 3-18). The best domestic wood with the highest
>>>>> compression
>>>>> rating and in the "resistant to very resistant" category is black
>>>>> locust,
>>>>> followed closely by white oak. The book goes on to say that  
>>>>> decay is
>>>>> hastened by water intrusion, so as others have mentioned, keeping
>>>>> the
>>>> finish
>>>>> up and the bolt holes sealed is the key to longevity.
>>>>>
>>>>> Greg Bover
>>>>> A-30 #114
>>>>> LINNET
>>>>> Gloucester
>>>>>
>>>>>
>>>>> _______________________________________________
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>>>>
>>>>
>>>> _______________________________________________
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>>>
>>>
>>>
>>> -- 
>>>
>>>
>>> Dominic Amann
>>> M 416-270-4587
>>> _______________________________________________
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>>
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>
>
> _______________________________________________
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> Please support them.
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